Book Image

Mastering Microsoft Dynamics 365 Business Central

By : Stefano Demiliani, Duilio Tacconi
Book Image

Mastering Microsoft Dynamics 365 Business Central

By: Stefano Demiliani, Duilio Tacconi

Overview of this book

Dynamics 365 Business Central is an all-in-one business management solution, which is easy to adopt and helps you make smarter business decisions. This book is a comprehensive guide to developing solutions with Microsoft ERP (in the cloud and also on-premises). It covers all aspects of developing extensions, right from preparing a sandbox environment to deploying a complete solution. The book starts by introducing you to the Dynamics 365 Business Central platform and the new Modern Development Environment. You'll then explore the sandbox concept, and see how to create sandboxes for development. As you advance, you’ll be able to build a complete advanced solution for Dynamics 365 Business Central with AL language and Visual Studio Code. You'll then learn how to debug and deploy the extension and write automatic testing. The book will also take you through advanced topics like integration (with Azure Functions, web services, and APIs), DevOps and CI/CD techniques, and machine learning. You'll discover how Dynamics 365 Business Central can be used with Office 365 apps. Finally, you'll analyze different ways to move existing solutions to the new development model based on extensions. By the end of this book, you'll be able to develop highly customized solutions that meet the requirements of modern businesses using Dynamics 365 Business Central.
Table of Contents (25 chapters)
Free Chapter
Section 1: Dynamics 365 Business Central - Platform Overview and the Basics of Modern Development
Section 2: Developing Extensions for Dynamics 365 Business Central
Section 3: Debugging, Testing, and Release Management (DevOps)
Section 4: Advanced Integrations with Dynamics 365 Business Central
Section 5: Moving Solutions to the New Extension Model

Learning about the technique behind test code

Before we start coding tests, we need to learn a couple of things about the technique behind test code, the so-called testability framework.

Since NAV 2009 Service Pack 1, Microsoft has allowed the platform to let you build test suites by means of test functions in test codeunits. When executing a test codeunit, the platform will do the following:

  • Run the OnRun trigger and each test function that resides in the test codeunit, from top to bottom
  • Record the result of each test function

This is what Luc van Vugt calls the first pillar of the testability framework. Our first test example will implement this.

The second pillar allows you to create so-called positive–negative, or rainy-path, tests, in which we test the circumstances that led to failure. To achieve this, we use the AL asserterror keyword, which should...